Typical values for the crop coefficient for full grown crops (K c mid) are listed in Table 12. Using the idea of a "crop factor" is slightly tricky, as to have a crop factor you need a reference guide, from which perspective all other sensor sizes are cropped. How Crop Factor is Calculated. Here is an example on how to derive the crop factor of the Nikon CX sensor: Plant Factors (PF) for established landscape plants, turfgrasses, and garden crops to provide acceptable performance in California 1. The take away is that the exposure is the same regardless of sensor size. What we can see is that the crop factor of the Nikon CX sensor is 2.73x, but it is usually rounded to 2.7x. Throughout this book and Stunning Digital Photography, I list focal lengths in 35mm equivalent.Therefore, if you want to calculate the equivalent focal length for a compact DSLR, you would divide the 35mm focal length by 1.6 for Canon or 1.5 for Nikon. The crop coefficients in Tables 3 and 4 can be used as a general guideline for British Columbia. Crop Factor: 43.27 / 15.86 = 2.73. 1 Values do not apply to any plant production operations, such as nurseries, greenhouses, sod farms, or commercial farms. It's mainly used as a way of comparing lens focal lengths when fitted to different cameras, which is more important than it sounds. This chart is based upon a 1.5x crop factor, which is the most common crop factor for “crop sensor” aps-c size sensors in DSLRs. The math to derive the crop factor is quite simple. As a photographer progresses in their craft and changes gear, they can absolutely apply the crop factor to their camera settings in order to achieve a similar look.. If the simple calculator doesn't suit your needs, we also offer calculators for crop factor based on sensor size and completely custom lens + sensor crop factor calculations. The crop coefficients are to be used for a grass reference ETo. The term crop factor refers to the ratio of a specific sensor to a 35mm full frame sensor. With the advent of DSLR filming and "full frame" 5d and 1d some people talk of all other smaller sensor sizes as being cropped. According to the table above, for example, you would have to use a 75mm lens on a full frame camera in order to get a photo with the exact same field of view as a photo from a crop sensor camera shooting at 50mm. Knowing the physical size of the sensor, you first calculate the diagonal using Pythagorean Theorem (a² + b² = c²), then divide the number by the diagonal of the crop sensor. As a result – when you fit a lens to a camera with a smaller sensor the lens is often said to have a larger equivalent lens size. Crop Factor and Focal Length. This factor determines the equivalent field of view of a lens when used on a camera with a sensor that is either smaller or larger than our reference full frame sensor. Crop factor is a term that describes the difference between your camera's sensor size and a traditional 35mm film frame. Common Crop Factors and Equivalent Focal Lengths. Canon Lenses: Crop Factor Conversion Chart Canon Lens List 2018: Full-Frame and APS-C (Crop Factor) Lenses Canon Lenses: Crop Factor Conversion Chart Many people are familiar with the two common APS-C crop factors: 1.6x for Canon, and 1.5x for Nikon, Sony and everyone else. Simply input your focal length, sensor size, and max aperture and we'll give you what the 35mm equivalent is of that configuration. Table 1. The crops should be of average height, well watered and well managed. mmCalc is a super simple photography focal length calculator. Green – 1.6x Crop Factor When you enlarge images to the same size from different sensors the ones with the smaller sensors will be enlarged more – making it seem bigger. Vegetable and Berry Crops Table 3 provides crop coefficients for various Here is a list of the common focal lengths and crop factors with resulting equivalent focal lengths: 35mm 1.5x 1.6x 2.0x 2.7x; 14mm 21mm 22.4mm 28mm 37.8mm The K c factor is often 5-10% higher than the reference (where K c = 1.0), and even 15-20% greater for some tall crops such as maize, sorghum or sugar cane (Figure 20).